maclanglois



0. MAcLANGLOlS. MULTIPLE ALARM SYSTEM. APPLICATION FILED MAR. 7. 1919.

1,359,263. Patehted Nov. 16, 1920;

2 SHEETS-SHEET I.

fvuz'NTolz- Gian/M Z412 y! 01's,

0. MACLANGLOIS.

MULTIPLE ALARM SYSTEM.

APPLICATION FILED MAR. 7. 1919,

Patented Nov. 16, 1920.

2 SHEETS-SHEET 2- 1 a E'e 42 fNUENTOR:

ObariMZmzylois; afibz UNITED STATES PATENT OFFICE.

OBAR'I. MACLANGLOIS, OF LOS ANGELES, CALIFORNIA, ASSIGNOB-OF ONE-HALF TOJAMES W. OAKES, 01 LOS ANGELES, CALIFORNIA.

IULTIPLE-ALARM SYSTEM.

Application filed March 7,

To all whom it may concern:

Be it known that I, OBART MAoLANGLoIs, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Multiple-AlarmSystems, of which the following is a specification.

My invention relates to alarms and particularly toa type of alarmcapable of giving a plurality of different s' als, or alarms, atpredetermined times an in regular order, the objects being to provide asuitable mechanism in cooperation with a time indicating mechanism,whereby, when initially set at a desired hour or fraction thereof analarm will be automatically sounded; to provide, further a suitablereceptacle in which the alarm mechanism may be housed, together withseparate means whereby a plurality of electrical circuits andconnections ma be established.

A furt er object is to provide a set of batteries in themechanism'housing, or case, and an alarm gong, or bell separate from anySuch alarm which may be on the clock. Other objects will appear as thedescription progresses.

Referring to the drawings, forming a part of this application, I haveillustrated a practical embodiment of my invention therein, in which:

Figure 1 is a perspective view of the assem led me hanism and casetherefor.

Fig. 2 is a longitudinal section of the same.

Fig. 3 is a perspective view of one of the plugs and cords, showing thestructure thereof.

Fig. 4 is a fragmentary perspective view of the hour 'hand of the clockshowing a contact thereon.

Fig. 5 is a similar view of the minute hand with a contact thereon.

Fig. 6 is a sectional plan of the housing.

Fig. 7 is'a transverse section of the same.

Fig. 8 is a sectional view of the hour and minute hand mounting andconnections.

Fig. 9 is a circuit diagram of the electrical connections for mymechanism.

Similar characters of referen"e are employed in the specification andthe several Specification of Letters Patent.

Patented Nov. 16, 1920.

1919. Serial No. 882,486.

views of the drawings for indicating the same and like parts.

The case 1 may be of any suitable form and of convenient dimensions, astrap 2 being provided on the top of the form shown by means of whichthe case may be carried about and a door 3 being provided on the righthand side thereof for affording access to the interior of the case.

Interior of the case and slightly spaced from the front wall 4, Iprovide a block 5 with a circular opening 6 therein adapted to receiveand hold firmly in position a clock 7, as shown in Fig. 2, the clockbeing additionally braced to the front wall 4 by means of straps 8attached to one end to the clock and at the other end to the inner sideof the wall. The clock is preferably centered with respect to the caseand an opening 9 is formed concentrically therewith in the front wall 4and has a glass pane 10 held in place by means of a wire retainer 12.

On the outer side of wall 4, I provide an insulated ring 13 countersunkin the wall and concentrically held relative to the open ing 9 by meansof screws 14 and a plurality of perforations 15, 15, 15, etc., areformed in said ring, there being preferably twelve of theseperforations, one arranged on the radial line of each of the hourfigures on the clock within the case. Between the ring 13 and theopening 9 of wall 4 and concentric therewith, I provide another ring ofinsulating material, su h as hard rubber, or wood'fiber, as at 16, andthis inner ring has one perforation 17 for each minute space on the dial18 of the clock, as shown in Fig. I.

On the interior of the wall 4, I provide a series of electrical contactplates 19 arranged in circular formation and having the form of asegment of a cir. le, as shown in Figs. 7 and 9, there being one of saidsegments for each hour on the face of the clock dial and the said platesbeing positioned on wall 4 so that the ends thereof will be equally spaed relative the hour figures on the clock. The segments are alinedhorizontally with the outer ring 13 and are spaced apart so as not tomake contact, the adjacent ends thereof being preferably reduced inwidth and overlapping in formation, as shown, for producing the bestresult.

In the rear portion of the case 1 a pair of electric storage batteries20, 20, are firmly connected by means of a wire 25 with the minute hand26 of the clock, a suitable clip or friction contact 2'? being mountedadjacent to the minute hand and for contact therewith.- As shown in Fig.8, the shaft 28 which carries said hand has an insulated bushing 29thereon which insulates the hand from the shaft-and the clip 27 is heldon the bushing loosely so that the hand may rotate around the dialwithout winding the wire 25 on the bushing, said w re being at tached tosaid clip, as shown.

Similarly the hour hand 30 has an insulating bushing 31011 the sleeve 32thereof and'a clip 33 which is connected by means of a wire B l with oneterminal 35 of the bell 24," the outer terminal 36 of the bell beingconnected. by means of wire 37 with batten ies 20. Thus it'will beobserved that the bell 24 isin series with the batteries 20 and that onepole of said batteries is connected permanentlywith the minute hand ofthe clock while the other pole isconnected with the hour hand, but thesaid hands being in-;

sulated from the clock mechanism no current willat any mechanism Thehour hand 30has a set of thin metallicand flimsy contact strips 38attached to the end thereof which are adapted to wipe.

the segments 19 in a path near the inner edge-thereof and thus makecontact with and transmit electric current to said plates beingcontinuous from'one hour to another, but a slight gap 39 being providedbetween each of the-plates so that only one offthe plates will beenergized at a time.

timefiow through the said hole 15 of ring 13 opposite the hour while theother plug of this set, bearing the same number, is inserted in the hole17 of ring 16 opposite thesixteenth minute mark of the dial of theclock. Thus the alarm is set 1 16 p. m. or a m as the casemay be, andwhen the hour hand passes the hour of 1 contact is made with the segment19 of that hour and said plate will thus be connected with the batteries20 through the hour hand 30 and the other connections de scribed. Whenthe minute hand reaches the plug positioned at 1:16 thefiimsy contacts16 "will wipe the plug stem, whichis 6X tended into the path of saidcontacts, and the circuit will be completed through cord 45-, thusenergizing the bell 2a and sounding the alarm. 7

it will be obvious that the provision of the cords a5 and pairs of plugsattached tl'iereto renders" the mechanism capable of producing as manydifferent alarms as there may be pairs of connected cords available,each circuit being completed only by its individual cord and plugs. Itwill be understood that when the plug is inserted in the outer ring 13,the stem of said plug also is seated in the segment 19 opposite thatparticular portion of ring 13 and the connection' is'thusmade betweenthe plug and In the mechanism described and shown it 'will be apparentthat I have provided an ethclent-and economical alarm mechanism 7 insuccession as the hand is moved around the dial of the clock, thecontact thus made Connection may be established between the hour andminute hands of the clock by" means of a pair of plugs 40 having splitstems 41 adapted to be inserted in the holes 15 of ring 13'and 17 of thering 16, each plug having an insulated head 12 with a mica sheet 43 heldon the fa e thereof by means of 'a ferrule 44. A card may beheld on theend of each plug bearing a number,

as shown, and the plugs of each pair are connected by means of aflexible electric cordv .45.

The plugs of each pair are numbered similarly. and each connection isknown and identified by the numbers of the plugs.

which may be used for a variety of purposes. @neuse to which themechanism maybe put is in connection with tire repair,"or vulcaniz- 7ing apparatus, in which business it is necessary to keep accurate recordand account of the times when tires are placed inand should be removedfrom the molds after the cook ing operation for uniting the old and.new'115 should be completed.- Likewise each mold may have a separatepair of the 'i jlugs and separate alarms will be sounded for each jobwithout interference with any of the others, and much time and'laborwill be saved thereby.

Hotels may also employ V y device for indicating the time to makecertain night calls to the rooms, and many other similar uses may befound where this instrumement will not only be found to be a conveniencebut a labor and time saving device.

What I claim is:

1. In a time indicating system, a clock having hour and minute handsthereon, overlapping contacts in the path of said hour indicator, meansfor energizing said hour and minute hands, and means capable of beingselectively positioned relative to the hour points 011 said clock, forindicating different times recorded on said clock.

2. In a device of the character described, a clock for indicating thetime, an electrical circuit including the hands of said clock,overlapping spaced contacts for engagement by said hands, andselectively positioned contact elements for completing the circuit ofsaid stationary contacts and said hands, for the purpose described.

3. In a device of the character described, the combination with a clockhaving the hands thereof connected with a source of electric current,stationary contacts opposite the hour points on said clock forengagement with the hour hand thereof, and selectively positionedcontact elements for engagement with the minute hand thereof and meansfor connecting said stationary and selectively positioned contacts, forthe purpose set forth,

Signed at Los Angles, Los Angeles county, California, this 19th day ofFebruary, 1919.

OBART MAoLANGLOIS.

In presence of- J. W. OAKES, H. M. BRUNDAGE.

